Question

Hi, could someone answer this question for me? Thanks!

"Moving down group 2A (Alkaline Earth Metals), which element has the largest first ionization energy?"

Answer 1

it should be the first one, seeing as ionising energy decreases down the group because electron enters a new orbital . This increases the screening effect of the other electrons near the nucleus and makes it easier for the outermost electron to escape

Answer 2

Thanks so much! That makes a lot of sense! :)